Mitragynine molecule. It is the herbal alkaloid with opiate-like properties produced by plant Mitragyna speciosa Korth, kratom. Structural chemical formula and molecule model Longsleeve T-shirt #274759362
If you need a timeless long-sleeved t-shirt, this soft long-sleeved crew shirt is the one for you. It has a 100% combed ringspun cotton, 32 singles thread weight, 4.3 oz. fabric weight, a set-in 1x1 baby rib collar and a tear away label.